I have tied both Thai and Dharma and a now solid Dharma customer
Funny how Bob resurrected his own two year old "silk thread"...a pun
I find the WEIGHT difference between 5 and 8MM to be a non issue....initially thinking the 5mm was better and lighter...but in practice the dope is where the weight gain comes... 8mm fills much quicker with less coats IMO
On a typical 36 to 60 inch wing the variance in just the silk weight is of no consequence.... only a few precious grams
In other words the physical weight diff between 5 and 8 is fractions ...but the tighter weave, slightly--- heavier 8mm, fills faster with less coats...
ONE MUST pay strict attention to the shrink bias... I bough 1 square yard once, and no easy way to see length 7~8% shrinkage vs width 1~2% shrinkage orientation...only buy min 2 yards at a time now